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    FIBER LASER APPARATUS
    44.
    发明公开
    FIBER LASER APPARATUS 有权
    光纤激光装置，

    公开(公告)号：EP2549597A1

    公开(公告)日：2013-01-23

    申请号：EP11753220.0

    申请日：2011-02-28

    Applicant: Fujikura Ltd.

    Inventor： OBA Yasuhiro ,  NAKAI Michihiro

    IPC: H01S3/06 ,  G02F1/35 ,  H01S3/0933 ,  H01S3/23

    CPC classification number: H01S3/06754 ,  G02F1/33 ,  G02F1/3526 ,  G02F1/37 ,  G02F2201/04 ,  G02F2201/307 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/0675 ,  H01S3/094076 ,  H01S3/10015 ,  H01S3/10046 ,  H01S3/10069 ,  H01S3/10092 ,  H01S3/1022 ,  H01S3/1068 ,  H01S3/1301 ,  H01S3/2375 ,  H01S3/302

    Abstract: A fiber laser device capable of restraining variations of the rise time of output laser light while shortening the rise time of the output laser light is provided. A fiber laser device (100) includes a seed laser light source (10), a pumping light source (20), an amplification optical fiber (30), a control unit (60), and an output instructing unit (65). When an output instruction is input to the control unit (60), the control unit (60) controls the seed laser light source (10) and the pumping light source (20) to be either in a pre-pumped state or in an output state. In the pre-pumped state, the pumping light source (20) outputs, for a predetermined period, pumping light with an intensity determined based on the duration of the period of time from when the output state prior to the input of the output instruction to the control unit (60) comes to an end till when the output instruction is input to the control unit (60). In the output state, to cause the output unit (50) to output laser light, the seed laser light source (10) outputs laser light, and the pumping light source (20) outputs pumping light.

    Semiconductor optical waveguide element and method for manufacturing semiconductor optical waveguide element
    50.
    发明专利
    Semiconductor optical waveguide element and method for manufacturing semiconductor optical waveguide element 有权
    半导体光波导元件和制造半导体光波导元件的方法

    公开(公告)号：JP2014174335A

    公开(公告)日：2014-09-22

    申请号：JP2013046976

    申请日：2013-03-08

    Applicant: Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

    Inventor： FURUYA AKIRA ,  KITAMURA TAKAMITSU ,  YAGI HIDEKI ,  KONO NAOYA

    IPC: G02B6/122 ,  G02B6/12 ,  G02F1/017

    CPC classification number: G02B6/305 ,  G02B6/1228 ,  G02B6/136 ,  G02B2006/12078 ,  G02F1/01708 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2001/217 ,  G02F2201/04 ,  G02F2201/06 ,  G02F2201/063 ,  G02F2201/12 ,  G02F2202/101 ,  G02F2202/102 ,  G02F2202/108

    Abstract: PROBLEM TO BE SOLVED: To provide a semiconductor optical waveguide element including a spot size converter.SOLUTION: A semiconductor optical waveguide element 81 includes a third semiconductor mesa 55 in which a 31-st mesa portion 55b has an end face 55d that can be optically coupled, located at an edge of a substrate 11. The end face 55d can be optically coupled to an external optical waveguide. As the width of the 31-st mesa portion 55b and the width of a 32-nd mesa portion 55c of the third semiconductor mesa 55 are larger than the width of a second semiconductor mesa 49 in the semiconductor optical waveguide element 81, a mode field diameter equal to or close to a mode field diameter of the external optical waveguide can be imparted to an optical waveguide relating to the third semiconductor mesa 55. The width of the second semiconductor mesa 49 is smaller than the width of the 31-st mesa portion 55b and the width of the 32-nd mesa portion 55c of the third semiconductor mesa 55; and a first core layer 41 and a second core layer 53 are optically coupled to each other. Thereby, propagation of light proceeds from the first core layer 41 to the second core layer 53 or from the second core layer 53 to the first core layer 41.

    Abstract translation: 要解决的问题：提供一种包括光斑尺寸转换器的半导体光波导元件。解决方案：半导体光波导元件81包括第三半导体台面55，其中第31台面部分55b具有可以光学的端面55d 耦合，位于基板11的边缘。端面55d可以光耦合到外部光波导。 当第三台面部分55b的宽度和第三半导体台面55的第32台面部分55c的宽度大于半导体光波导元件81中的第二半导体台面49的宽度时，模场 可以将与外部光波导的模场直径相等或接近的直径赋予与第三半导体台面55相关的光波导。第二半导体台面49的宽度小于第31台面部分的宽度 55b和第三半导体台面55的第32台面部分55c的宽度; 并且第一芯层41和第二芯层53彼此光学耦合。 由此，光的传播从第一芯层41到第二芯层53或从第二芯层53延伸到第一芯层41。

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